[jira] [Commented] (SPARK-3177) Yarn-alpha ClientBaseSuite Unit test failed

["Chester (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-3177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14105984#comment-14105984 ] 

Chester commented on SPARK-3177:
--------------------------------

This issue should exists on master branch as well. It has been over there for a while. 

> Yarn-alpha ClientBaseSuite Unit test failed
> -------------------------------------------
>
>                 Key: SPARK-3177
>                 URL: https://issues.apache.org/jira/browse/SPARK-3177
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>    Affects Versions: 1.1.1
>            Reporter: Chester
>            Priority: Minor
>              Labels: test
>             Fix For: 1.1.1
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Yarn-alpha ClientBaseSuite Unit test failed due to differences of MRJobConfig API between yarn-stable and yarn-alpha. 
> The class field
> MRJobConfig.DEFAULT_MAPREDUCE_APPLICATION_CLASSPATH 
> in yarn-alpha 
> returns String Array
> in yarn 
> returns String 
> the method will works for yarn-stable but will fail as it try to cast String Array to String. 
> val knownDefMRAppCP: Seq[String] =
>      getFieldValue[String, Seq[String]](classOf[MRJobConfig],
> "DEFAULT_MAPREDUCE_APPLICATION_CLASSPATH",
>                                          Seq[String]())(a => a.split(","))



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